extemporize

verb

"extemporize" is a 11-letter English headword indexed on PlainSpell.

The verdict

“extemporize” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To perform or speak without prior planning or thought; to act in an impromptu manner; to improvise.

Corpus desk

Index EN-extemporize · extemporize · English

extemporize · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "E" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for extemporize
PropertyValue
Headwordextemporize
LanguageEnglish
Part of speechVerb
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “extemporize” in English

extemporizesits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

extemporize is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for extemporize, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From extempore + -ize. The correct English form is extemporize, spelled E-X-T-E-M-P-O-R-I-Z-E.

Definition

  1. 1
    To perform or speak without prior planning or thought; to act in an impromptu manner; to improvise.
  2. 2
    To adapt, improvise, or devise action or speech in an impromptu or spontaneous manner.

Recorded use

Wiktionary examples

These source excerpts show how extemporize appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. "Will you please tell me whose music you have been playing?" . . . "It's nobody's, miss." "Do you mean you have been extemporizing all this time?"
  2. But while some of his predecessors liked to extemporize, Obama prefers the message to be just so.

Etymology

From extempore + -ize.

Synonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "extemporize"?
"extemporize" is spelled E-X-T-E-M-P-O-R-I-Z-E.
What does "extemporize" mean?
As a verb, "extemporize" means: To perform or speak without prior planning or thought; to act in an impromptu manner; to improvise.
What is the origin of the word "extemporize"?
From extempore + -ize. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list